Merge change 1664

* changes:
  Added PluginManager to handle getting all the plugin directories from PackageManager.
tree: f75d013e1a900eb2e05fb03554bfdf249ce673b8
  1. awt/
  2. camera/
  3. cmds/
  4. im/
  5. include/
  6. libs/
  7. opengl/
  8. MODULE_LICENSE_APACHE2
  9. NOTICE